Safety-gate for elevators



(No Model.) 2 Sheets-Sheet 1.-

1 F. K. BART-LETT. SAFETY GATB-FO'RELEVATORS. N0.-29Z,462. j Patented Jan. 29, 1884-.

WITNESSES: I ,INVENTOR ATTORNEY Ens Plmlu-ljihagnphur. Washi nnnnnn a (No Model'.) 2 sheet s sheet 2.

T. TBARTLETT. T SAFETY GATE 'FOR'ELEVA' ORS. 7 No. 292,462. Patented Jan. 29, 1884.

' ATTORNEY 2 N, PEYERS Pholmljlhogmphor. wmi mmmmmm c --PUNITED STATES;

PATENT OFF-ICE.- 1

FRANK K. BARTLETT, or SPRINGFIELD, MASSAQHUSETTS,

. SAFETY-GATE FORELEVATORS.

SPECIFICATION forming part of Letters Patent No. 292,462 dated January 59,1884.

Application filed July 18, 1883. (No model.)

To aZZ whom it may concern.-

Be it known that I, FRANK K. BARTLETT, a.

field,.in the county of Hampden and State of Massachusetts, have invented new-and useful Improvementsin Safety-Gates for Elevators,

of which the following is a specification.

.This invention relates to improvements in safety-gates for elevator-wells; and it consists in the combination, with a suspended gate, of improved appliances interposed between said gate and the elevator carriage or platform, whereby the gate is caused to drop down and close the entrance to the elevator when the carriage moves away from the landing-floor.

In the drawings forming part of this specification, Figure l is a View, partly in section,

of portions of a building. and elevator appliances having connected with them a safety gate and operating mechanism constructed according to my invention. Fig. 2 is a similar View to Fig. 1, but illustrating a manner of operating the gate from the elevator-plat; form instead of from the frame-work above.

In the drawings, h represents the landingfloor around the elevator-welh D e aretwo of the guide-posts within which the elevator moves.

on post I). o is alever. m is a stop-pin. 0 is a spring. a is a pin-block. w is the gate. a: is a cord. c is astop-spring.

The elevator, consisting of the platform and upper frame-work,'of which the postbis a part, is, together with the post construction surrounding the elevator-well,-of which posts D and e are a part, of the ordinary construction. The front corner-posts of the elevatorwell, of which 6 is one, are grooved on their opposite faces, to receive between them a gate, '10, adapted to be moved up and down in the grooves in said posts and open and close the entrance to the elevator. The gate w has a cord, .90, attached to each side or end of it, which cord runs over rollers in post 6 to the outside of it, and has attached thereto a weight, as shown in dotted lines in Fig. 1. The weights, which are attached to gate w, as aforesaid, are adapted to assist in raising the gate; but the weight of the latter is greater A is the elevator-platform, and b one' of the posts of its frame-work. cis acani-block the platform A when it is inconvenient to than that of said weights, so that when it is unobstructed it will drop down and close the entrance to the elevator. The gate has a flex1- ble stop-spring, a, attached to it, as shown. A lever, 12, is pivoted to a suitable supporting-block on post D, and pivoted to said lever is a pin, m, one end of which passes through a block, a, on post 6. A spring, 0, on pin m is located between the outside of block it and a pin passing through pin m, whereby the latter is drawn back to retire its end within block a. A cam-block, c, is secured on the side of post I), and is adapted to be carried by the ,elevator against the free end of lever 21 when the elevator approaches the landingfioor h, and so move pin m as to cause one end thereof to project beyond'the side of block a when the platform A is at or near the said 'floor.

The operation of my above-described improvements is as follows: The gate w is found in the down position shown in Fig. 1 when p the elevator-platform approaches the floor h, and the movement of the elevator brings the cam-block c in contact with the free end of lever 11, swinging the latter, and pushing pin m through block n. The elevator having been stopped at floor h, the gate 10 is raised up to 'pin m from under the end of spring a, thereby lettingthe gate drop and close the elevatorentrance as soon as the elevator moves away from the floor h.

Fig. 2 illustrates the manner of operating the pin m and the gate to by connections with 0 arrange the connections as above described, or when the'platform is devoid of upper framework. A compound lever, g y, is hung on the side of post e, one end of which engages with a pin, f, at one edge of the platform, and the upper end engages with the pin m. A spring, 2, breaks the force of the fall of the ater g Vhat I claim as my invention is- 1. The combination, with the elevator A 100 and the gate 10, having the spring a thereon, beyond the side of block n when the elevator of the pin m, lever 1;, spring 0, and the camapproaches the landing-floor h, substantially block a, substantially as set forth. as set forth.

2. In combination, the gate w, having the FRANK K. BARTLETT. 5 spring a thereon, the elevator A, the pin m \Vitnesses:

and spring 0, and mechanism, substantially as WM. H. Ciurix, described, for moving pin m, to carry its end J. D. GARFIELD. 

